includes/Article.php

   1 <?php
   2 /**
   3  * File for articles
   4  * @file
   5  */
   6
   7 /**
   8  * Class for viewing MediaWiki article and history.
   9  *
  10  * This maintains WikiPage functions for backwards compatibility.
  11  *
  12  * @TODO: move and rewrite code to an Action class
  13  *
  14  * See design.txt for an overview.
  15  * Note: edit user interface and cache support functions have been
  16  * moved to separate EditPage and HTMLFileCache classes.
  17  *
  18  * @internal documentation reviewed 15 Mar 2010
  19  */
  20 class Article extends Page {
  21         /**@{{
  22          * @private
  23          */
  24
  25         /**
  26          * @var IContextSource
  27          */
  28         protected $mContext;
  29
  30         /**
  31          * @var WikiPage
  32          */
  33         protected $mPage;
  34
  35         /**
  36          * @var ParserOptions: ParserOptions object for $wgUser articles
  37          */
  38         public $mParserOptions;
  39
  40         var $mContent;                    // !<  #FIXME: use Content object!
  41         var $mContentLoaded = false;      // !<
  42         var $mOldId;                      // !<
  43
  44         /**
  45          * @var Title
  46          */
  47         var $mRedirectedFrom = null;
  48
  49         /**
  50          * @var mixed: boolean false or URL string
  51          */
  52         var $mRedirectUrl = false;        // !<
  53         var $mRevIdFetched = 0;           // !<
  54
  55         /**
  56          * @var Revision
  57          */
  58         var $mRevision = null;
  59
  60         /**
  61          * @var ParserOutput
  62          */
  63         var $mParserOutput;
  64
  65         /**@}}*/
  66
  67         /**
  68          * Constructor and clear the article
  69          * @param $title Title Reference to a Title object.
  70          * @param $oldId Integer revision ID, null to fetch from request, zero for current
  71          */
  72         public function __construct( Title $title, $oldId = null ) {
  73                 $this->mOldId = $oldId;
  74                 $this->mPage = $this->newPage( $title );
  75         }
  76
  77         /**
  78          * @param $title Title
  79          * @return WikiPage
  80          */
  81         protected function newPage( Title $title ) {
  82                 return new WikiPage( $title );
  83         }
  84
  85         /**
  86          * Constructor from a page id
  87          * @param $id Int article ID to load
  88          * @return Article|null
  89          */
  90         public static function newFromID( $id ) {
  91                 $t = Title::newFromID( $id );
  92                 # @todo FIXME: Doesn't inherit right
  93                 return $t == null ? null : new self( $t );
  94                 # return $t == null ? null : new static( $t ); // PHP 5.3
  95         }
  96
  97         /**
  98          * Create an Article object of the appropriate class for the given page.
  99          *
 100          * @param $title Title
 101          * @param $context IContextSource
 102          * @return Article object
 103          */
 104         public static function newFromTitle( $title, IContextSource $context ) {
 105                 if ( NS_MEDIA == $title->getNamespace() ) {
 106                         // FIXME: where should this go?
 107                         $title = Title::makeTitle( NS_FILE, $title->getDBkey() );
 108                 }
 109
 110                 $page = null;
 111                 wfRunHooks( 'ArticleFromTitle', array( &$title, &$page ) );
 112                 if ( !$page ) {
 113                         switch( $title->getNamespace() ) {
 114                                 case NS_FILE:
 115                                         $page = new ImagePage( $title );
 116                                         break;
 117                                 case NS_CATEGORY:
 118                                         $page = new CategoryPage( $title );
 119                                         break;
 120                                 default:
 121                                         $page = new Article( $title );
 122                         }
 123                 }
 124                 $page->setContext( $context );
 125
 126                 return $page;
 127         }
 128
 129         /**
 130          * Create an Article object of the appropriate class for the given page.
 131          *
 132          * @param $page WikiPage
 133          * @param $context IContextSource
 134          * @return Article object
 135          */
 136         public static function newFromWikiPage( WikiPage $page, IContextSource $context ) {
 137                 $article = self::newFromTitle( $page->getTitle(), $context );
 138                 $article->mPage = $page; // override to keep process cached vars
 139                 return $article;
 140         }
 141
 142         /**
 143          * Tell the page view functions that this view was redirected
 144          * from another page on the wiki.
 145          * @param $from Title object.
 146          */
 147         public function setRedirectedFrom( Title $from ) {
 148                 $this->mRedirectedFrom = $from;
 149         }
 150
 151         /**
 152          * Get the title object of the article
 153          *
 154          * @return Title object of this page
 155          */
 156         public function getTitle() {
 157                 return $this->mPage->getTitle();
 158         }
 159
 160         /**
 161          * Get the WikiPage object of this instance
 162          *
 163          * @since 1.19
 164          * @return WikiPage
 165          */
 166         public function getPage() {
 167                 return $this->mPage;
 168         }
 169
 170         /**
 171          * Clear the object
 172          */
 173         public function clear() {
 174                 $this->mContentLoaded = false;
 175
 176                 $this->mRedirectedFrom = null; # Title object if set
 177                 $this->mRevIdFetched = 0;
 178                 $this->mRedirectUrl = false;
 179
 180                 $this->mPage->clear();
 181         }
 182
 183         /**
 184          * Note that getContent/loadContent do not follow redirects anymore.
 185          * If you need to fetch redirectable content easily, try
 186          * the shortcut in WikiPage::getRedirectTarget()
 187          *
 188          * This function has side effects! Do not use this function if you
 189          * only want the real revision text if any.
 190          *
 191          * @return Return the text of this revision
 192          */
 193         public function getContent() {
 194                 global $wgUser;
 195
 196                 wfProfileIn( __METHOD__ );
 197
 198                 if ( $this->mPage->getID() === 0 ) {
 199                         # If this is a MediaWiki:x message, then load the messages
 200                         # and return the message value for x.
 201                         if ( $this->getTitle()->getNamespace() == NS_MEDIAWIKI ) {
 202                                 $text = $this->getTitle()->getDefaultMessageText();
 203                                 if ( $text === false ) {
 204                                         $text = '';
 205                                 }
 206                         } else {
 207                                 $text = wfMsgExt( $wgUser->isLoggedIn() ? 'noarticletext' : 'noarticletextanon', 'parsemag' );
 208                         }
 209                         wfProfileOut( __METHOD__ );
 210
 211                         return $text;
 212                 } else {
 213                         $this->fetchContent();
 214                         wfProfileOut( __METHOD__ );
 215
 216                         return $this->mContent;
 217                 }
 218         }
 219
 220         /**
 221          * @return int The oldid of the article that is to be shown, 0 for the
 222          *             current revision
 223          */
 224         public function getOldID() {
 225                 if ( is_null( $this->mOldId ) ) {
 226                         $this->mOldId = $this->getOldIDFromRequest();
 227                 }
 228
 229                 return $this->mOldId;
 230         }
 231
 232         /**
 233          * Sets $this->mRedirectUrl to a correct URL if the query parameters are incorrect
 234          *
 235          * @return int The old id for the request
 236          */
 237         public function getOldIDFromRequest() {
 238                 global $wgRequest;
 239
 240                 $this->mRedirectUrl = false;
 241
 242                 $oldid = $wgRequest->getIntOrNull( 'oldid' );
 243
 244                 if ( $oldid === null ) {
 245                         return 0;
 246                 }
 247
 248                 if ( $oldid !== 0 ) {
 249                         # Load the given revision and check whether the page is another one.
 250                         # In that case, update this instance to reflect the change.
 251                         $this->mRevision = Revision::newFromId( $oldid );
 252                         if ( $this->mRevision !== null ) {
 253                                 // Revision title doesn't match the page title given?
 254                                 if ( $this->mPage->getID() != $this->mRevision->getPage() ) {
 255                                         $function = array( get_class( $this->mPage ), 'newFromID' );
 256                                         $this->mPage = call_user_func( $function, $this->mRevision->getPage() );
 257                                 }
 258                         }
 259                 }
 260
 261                 if ( $wgRequest->getVal( 'direction' ) == 'next' ) {
 262                         $nextid = $this->getTitle()->getNextRevisionID( $oldid );
 263                         if ( $nextid ) {
 264                                 $oldid = $nextid;
 265                                 $this->mRevision = null;
 266                         } else {
 267                                 $this->mRedirectUrl = $this->getTitle()->getFullURL( 'redirect=no' );
 268                         }
 269                 } elseif ( $wgRequest->getVal( 'direction' ) == 'prev' ) {
 270                         $previd = $this->getTitle()->getPreviousRevisionID( $oldid );
 271                         if ( $previd ) {
 272                                 $oldid = $previd;
 273                                 $this->mRevision = null;
 274                         }
 275                 }
 276
 277                 return $oldid;
 278         }
 279
 280         /**
 281          * Load the revision (including text) into this object
 282          *
 283          * @deprecated in 1.19; use fetchContent()
 284          */
 285         function loadContent() {
 286                 wfDeprecated( __METHOD__, '1.19' );
 287                 $this->fetchContent();
 288         }
 289
 290         /**
 291          * Get text of an article from database
 292          * Does *NOT* follow redirects.
 293          *
 294          * @return mixed string containing article contents, or false if null
 295          */
 296         function fetchContent() {
 297                 if ( $this->mContentLoaded ) {
 298                         return $this->mContent;
 299                 }
 300
 301                 wfProfileIn( __METHOD__ );
 302
 303                 $this->mContentLoaded = true;
 304
 305                 $oldid = $this->getOldID();
 306
 307                 # Pre-fill content with error message so that if something
 308                 # fails we'll have something telling us what we intended.
 309                 $t = $this->getTitle()->getPrefixedText();
 310                 $d = $oldid ? wfMsgExt( 'missingarticle-rev', array( 'escape' ), $oldid ) : '';
 311                 $this->mContent = wfMsgNoTrans( 'missing-article', $t, $d ) ;
 312
 313                 if ( $oldid ) {
 314                         # $this->mRevision might already be fetched by getOldIDFromRequest()
 315                         if ( !$this->mRevision ) {
 316                                 $this->mRevision = Revision::newFromId( $oldid );
 317                                 if ( !$this->mRevision ) {
 318                                         wfDebug( __METHOD__ . " failed to retrieve specified revision, id $oldid\n" );
 319                                         wfProfileOut( __METHOD__ );
 320                                         return false;
 321                                 }
 322                         }
 323                 } else {
 324                         if ( !$this->mPage->getLatest() ) {
 325                                 wfDebug( __METHOD__ . " failed to find page data for title " . $this->getTitle()->getPrefixedText() . "\n" );
 326                                 wfProfileOut( __METHOD__ );
 327                                 return false;
 328                         }
 329
 330                         $this->mRevision = $this->mPage->getRevision();
 331                         if ( !$this->mRevision ) {
 332                                 wfDebug( __METHOD__ . " failed to retrieve current page, rev_id " . $this->mPage->getLatest() . "\n" );
 333                                 wfProfileOut( __METHOD__ );
 334                                 return false;
 335                         }
 336                 }
 337
 338                 // @todo FIXME: Horrible, horrible! This content-loading interface just plain sucks.
 339                 // We should instead work with the Revision object when we need it...
 340                 $this->mContent = $this->mRevision->getText( Revision::FOR_THIS_USER ); // Loads if user is allowed
 341                 $this->mRevIdFetched = $this->mRevision->getId();
 342
 343                 wfRunHooks( 'ArticleAfterFetchContent', array( &$this, &$this->mContent ) );
 344
 345                 wfProfileOut( __METHOD__ );
 346
 347                 return $this->mContent;
 348         }
 349
 350         /**
 351          * No-op
 352          * @deprecated since 1.18
 353          */
 354         public function forUpdate() {
 355                 wfDeprecated( __METHOD__, '1.18' );
 356         }
 357
 358         /**
 359          * Returns true if the currently-referenced revision is the current edit
 360          * to this page (and it exists).
 361          * @return bool
 362          */
 363         public function isCurrent() {
 364                 # If no oldid, this is the current version.
 365                 if ( $this->getOldID() == 0 ) {
 366                         return true;
 367                 }
 368
 369                 return $this->mPage->exists() && $this->mRevision && $this->mRevision->isCurrent();
 370         }
 371
 372         /**
 373          * Get the fetched Revision object depending on request parameters or null
 374          * on failure.
 375          *
 376          * @since 1.19
 377          * @return Revision|null
 378          */
 379         public function getRevisionFetched() {
 380                 $this->fetchContent();
 381
 382                 return $this->mRevision;
 383         }
 384
 385         /**
 386          * Use this to fetch the rev ID used on page views
 387          *
 388          * @return int revision ID of last article revision
 389          */
 390         public function getRevIdFetched() {
 391                 if ( $this->mRevIdFetched ) {
 392                         return $this->mRevIdFetched;
 393                 } else {
 394                         return $this->mPage->getLatest();
 395                 }
 396         }
 397
 398         /**
 399          * This is the default action of the index.php entry point: just view the
 400          * page of the given title.
 401          */
 402         public function view() {
 403                 global $wgUser, $wgOut, $wgRequest, $wgParser;
 404                 global $wgUseFileCache, $wgUseETag, $wgDebugToolbar;
 405
 406                 wfProfileIn( __METHOD__ );
 407
 408                 # Get variables from query string
 409                 # As side effect this will load the revision and update the title
 410                 # in a revision ID is passed in the request, so this should remain
 411                 # the first call of this method even if $oldid is used way below.
 412                 $oldid = $this->getOldID();
 413
 414                 # Another whitelist check in case getOldID() is altering the title
 415                 $permErrors = $this->getTitle()->getUserPermissionsErrors( 'read', $wgUser );
 416                 if ( count( $permErrors ) ) {
 417                         wfDebug( __METHOD__ . ": denied on secondary read check\n" );
 418                         wfProfileOut( __METHOD__ );
 419                         throw new PermissionsError( 'read', $permErrors );
 420                 }
 421
 422                 # getOldID() may as well want us to redirect somewhere else
 423                 if ( $this->mRedirectUrl ) {
 424                         $wgOut->redirect( $this->mRedirectUrl );
 425                         wfDebug( __METHOD__ . ": redirecting due to oldid\n" );
 426                         wfProfileOut( __METHOD__ );
 427
 428                         return;
 429                 }
 430
 431                 # If we got diff in the query, we want to see a diff page instead of the article.
 432                 if ( $wgRequest->getCheck( 'diff' ) ) {
 433                         wfDebug( __METHOD__ . ": showing diff page\n" );
 434                         $this->showDiffPage();
 435                         wfProfileOut( __METHOD__ );
 436
 437                         return;
 438                 }
 439
 440                 # Set page title (may be overridden by DISPLAYTITLE)
 441                 $wgOut->setPageTitle( $this->getTitle()->getPrefixedText() );
 442
 443                 $wgOut->setArticleFlag( true );
 444                 # Allow frames by default
 445                 $wgOut->allowClickjacking();
 446
 447                 $parserCache = ParserCache::singleton();
 448
 449                 $parserOptions = $this->getParserOptions();
 450                 # Render printable version, use printable version cache
 451                 if ( $wgOut->isPrintable() ) {
 452                         $parserOptions->setIsPrintable( true );
 453                         $parserOptions->setEditSection( false );
 454                 } elseif ( !$this->getTitle()->quickUserCan( 'edit' ) ) {
 455                         $parserOptions->setEditSection( false );
 456                 }
 457
 458                 # Try client and file cache
 459                 if ( !$wgDebugToolbar && $oldid === 0 && $this->mPage->checkTouched() ) {
 460                         if ( $wgUseETag ) {
 461                                 $wgOut->setETag( $parserCache->getETag( $this, $parserOptions ) );
 462                         }
 463
 464                         # Is it client cached?
 465                         if ( $wgOut->checkLastModified( $this->mPage->getTouched() ) ) {
 466                                 wfDebug( __METHOD__ . ": done 304\n" );
 467                                 wfProfileOut( __METHOD__ );
 468
 469                                 return;
 470                         # Try file cache
 471                         } elseif ( $wgUseFileCache && $this->tryFileCache() ) {
 472                                 wfDebug( __METHOD__ . ": done file cache\n" );
 473                                 # tell wgOut that output is taken care of
 474                                 $wgOut->disable();
 475                                 $this->mPage->doViewUpdates( $wgUser );
 476                                 wfProfileOut( __METHOD__ );
 477
 478                                 return;
 479                         }
 480                 }
 481
 482                 # Should the parser cache be used?
 483                 $useParserCache = $this->mPage->isParserCacheUsed( $parserOptions, $oldid );
 484                 wfDebug( 'Article::view using parser cache: ' . ( $useParserCache ? 'yes' : 'no' ) . "\n" );
 485                 if ( $wgUser->getStubThreshold() ) {
 486                         wfIncrStats( 'pcache_miss_stub' );
 487                 }
 488
 489                 $this->showRedirectedFromHeader();
 490                 $this->showNamespaceHeader();
 491
 492                 # Iterate through the possible ways of constructing the output text.
 493                 # Keep going until $outputDone is set, or we run out of things to do.
 494                 $pass = 0;
 495                 $outputDone = false;
 496                 $this->mParserOutput = false;
 497
 498                 while ( !$outputDone && ++$pass ) {
 499                         switch( $pass ) {
 500                                 case 1:
 501                                         wfRunHooks( 'ArticleViewHeader', array( &$this, &$outputDone, &$useParserCache ) );
 502                                         break;
 503                                 case 2:
 504                                         # Early abort if the page doesn't exist
 505                                         if ( !$this->mPage->exists() ) {
 506                                                 wfDebug( __METHOD__ . ": showing missing article\n" );
 507                                                 $this->showMissingArticle();
 508                                                 wfProfileOut( __METHOD__ );
 509                                                 return;
 510                                         }
 511
 512                                         # Try the parser cache
 513                                         if ( $useParserCache ) {
 514                                                 $this->mParserOutput = $parserCache->get( $this, $parserOptions );
 515
 516                                                 if ( $this->mParserOutput !== false ) {
 517                                                         if ( $oldid ) {
 518                                                                 wfDebug( __METHOD__ . ": showing parser cache contents for current rev permalink\n" );
 519                                                                 $this->setOldSubtitle( $oldid );
 520                                                         } else {
 521                                                                 wfDebug( __METHOD__ . ": showing parser cache contents\n" );
 522                                                         }
 523                                                         $wgOut->addParserOutput( $this->mParserOutput );
 524                                                         # Ensure that UI elements requiring revision ID have
 525                                                         # the correct version information.
 526                                                         $wgOut->setRevisionId( $this->mPage->getLatest() );
 527                                                         # Preload timestamp to avoid a DB hit
 528                                                         $cachedTimestamp = $this->mParserOutput->getTimestamp();
 529                                                         if ( $cachedTimestamp !== null ) {
 530                                                                 $wgOut->setRevisionTimestamp( $cachedTimestamp );
 531                                                                 $this->mPage->setTimestamp( $cachedTimestamp );
 532                                                         }
 533                                                         $outputDone = true;
 534                                                 }
 535                                         }
 536                                         break;
 537                                 case 3:
 538                                         # This will set $this->mRevision if needed
 539                                         $this->fetchContent();
 540
 541                                         # Are we looking at an old revision
 542                                         if ( $oldid && $this->mRevision ) {
 543                                                 $this->setOldSubtitle( $oldid );
 544
 545                                                 if ( !$this->showDeletedRevisionHeader() ) {
 546                                                         wfDebug( __METHOD__ . ": cannot view deleted revision\n" );
 547                                                         wfProfileOut( __METHOD__ );
 548                                                         return;
 549                                                 }
 550                                         }
 551
 552                                         # Ensure that UI elements requiring revision ID have
 553                                         # the correct version information.
 554                                         $wgOut->setRevisionId( $this->getRevIdFetched() );
 555                                         # Preload timestamp to avoid a DB hit
 556                                         $wgOut->setRevisionTimestamp( $this->getTimestamp() );
 557
 558                                         # Pages containing custom CSS or JavaScript get special treatment
 559                                         if ( $this->getTitle()->isCssOrJsPage() || $this->getTitle()->isCssJsSubpage() ) {
 560                         #FIXME: use Content object instead!
 561                                                 wfDebug( __METHOD__ . ": showing CSS/JS source\n" );
 562                                                 $this->showCssOrJsPage();
 563                                                 $outputDone = true;
 564                                         } elseif( !wfRunHooks( 'ArticleViewCustom', array( $this->mContent, $this->getTitle(), $wgOut ) ) ) {
 565                                                 # Allow extensions do their own custom view for certain pages
 566                                                 $outputDone = true;
 567                                         } else {
 568                                                 $text = $this->getContent();
 569                                                 $rt = Title::newFromRedirectArray( $text );
 570                                                 if ( $rt ) {
 571                                                         wfDebug( __METHOD__ . ": showing redirect=no page\n" );
 572                                                         # Viewing a redirect page (e.g. with parameter redirect=no)
 573                                                         $wgOut->addHTML( $this->viewRedirect( $rt ) );
 574                                                         # Parse just to get categories, displaytitle, etc.
 575                                                         $this->mParserOutput = $wgParser->parse( $text, $this->getTitle(), $parserOptions );
 576                                                         $wgOut->addParserOutputNoText( $this->mParserOutput );
 577                                                         $outputDone = true;
 578                                                 }
 579                                         }
 580                                         break;
 581                                 case 4:
 582                                         # Run the parse, protected by a pool counter
 583                                         wfDebug( __METHOD__ . ": doing uncached parse\n" );
 584
 585                                         $poolArticleView = new PoolWorkArticleView( $this, $parserOptions,
 586                                                 $this->getRevIdFetched(), $useParserCache, $this->getContent() );
 587
 588                                         if ( !$poolArticleView->execute() ) {
 589                                                 $error = $poolArticleView->getError();
 590                                                 if ( $error ) {
 591                                                         $wgOut->clearHTML(); // for release() errors
 592                                                         $wgOut->enableClientCache( false );
 593                                                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
 594
 595                                                         $errortext = $error->getWikiText( false, 'view-pool-error' );
 596                                                         $wgOut->addWikiText( '<div class="errorbox">' . $errortext . '</div>' );
 597                                                 }
 598                                                 # Connection or timeout error
 599                                                 wfProfileOut( __METHOD__ );
 600                                                 return;
 601                                         }
 602
 603                                         $this->mParserOutput = $poolArticleView->getParserOutput();
 604                                         $wgOut->addParserOutput( $this->mParserOutput );
 605
 606                                         # Don't cache a dirty ParserOutput object
 607                                         if ( $poolArticleView->getIsDirty() ) {
 608                                                 $wgOut->setSquidMaxage( 0 );
 609                                                 $wgOut->addHTML( "<!-- parser cache is expired, sending anyway due to pool overload-->\n" );
 610                                         }
 611
 612                                         $outputDone = true;
 613                                         break;
 614                                 # Should be unreachable, but just in case...
 615                                 default:
 616                                         break 2;
 617                         }
 618                 }
 619
 620                 # Get the ParserOutput actually *displayed* here.
 621                 # Note that $this->mParserOutput is the *current* version output.
 622                 $pOutput = ( $outputDone instanceof ParserOutput )
 623                         ? $outputDone // object fetched by hook
 624                         : $this->mParserOutput;
 625
 626                 # Adjust title for main page & pages with displaytitle
 627                 if ( $pOutput ) {
 628                         $this->adjustDisplayTitle( $pOutput );
 629                 }
 630
 631                 # For the main page, overwrite the <title> element with the con-
 632                 # tents of 'pagetitle-view-mainpage' instead of the default (if
 633                 # that's not empty).
 634                 # This message always exists because it is in the i18n files
 635                 if ( $this->getTitle()->isMainPage() ) {
 636                         $msg = wfMessage( 'pagetitle-view-mainpage' )->inContentLanguage();
 637                         if ( !$msg->isDisabled() ) {
 638                                 $wgOut->setHTMLTitle( $msg->title( $this->getTitle() )->text() );
 639                         }
 640                 }
 641
 642                 # Check for any __NOINDEX__ tags on the page using $pOutput
 643                 $policy = $this->getRobotPolicy( 'view', $pOutput );
 644                 $wgOut->setIndexPolicy( $policy['index'] );
 645                 $wgOut->setFollowPolicy( $policy['follow'] );
 646
 647                 $this->showViewFooter();
 648                 $this->mPage->doViewUpdates( $wgUser );
 649
 650                 wfProfileOut( __METHOD__ );
 651         }
 652
 653         /**
 654          * Adjust title for pages with displaytitle, -{T|}- or language conversion
 655          * @param $pOutput ParserOutput
 656          */
 657         public function adjustDisplayTitle( ParserOutput $pOutput ) {
 658                 global $wgOut;
 659                 # Adjust the title if it was set by displaytitle, -{T|}- or language conversion
 660                 $titleText = $pOutput->getTitleText();
 661                 if ( strval( $titleText ) !== '' ) {
 662                         $wgOut->setPageTitle( $titleText );
 663                 }
 664         }
 665
 666         /**
 667          * Show a diff page according to current request variables. For use within
 668          * Article::view() only, other callers should use the DifferenceEngine class.
 669          */
 670         public function showDiffPage() {
 671                 global $wgRequest, $wgUser;
 672
 673                 $diff = $wgRequest->getVal( 'diff' );
 674                 $rcid = $wgRequest->getVal( 'rcid' );
 675                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
 676                 $purge = $wgRequest->getVal( 'action' ) == 'purge';
 677                 $unhide = $wgRequest->getInt( 'unhide' ) == 1;
 678                 $oldid = $this->getOldID();
 679
 680                 $de = new DifferenceEngine( $this->getContext(), $oldid, $diff, $rcid, $purge, $unhide );
 681                 // DifferenceEngine directly fetched the revision:
 682                 $this->mRevIdFetched = $de->mNewid;
 683                 $de->showDiffPage( $diffOnly );
 684
 685                 if ( $diff == 0 || $diff == $this->mPage->getLatest() ) {
 686                         # Run view updates for current revision only
 687                         $this->mPage->doViewUpdates( $wgUser );
 688                 }
 689         }
 690
 691         /**
 692          * Show a page view for a page formatted as CSS or JavaScript. To be called by
 693          * Article::view() only.
 694          *
 695          * This is hooked by SyntaxHighlight_GeSHi to do syntax highlighting of these
 696          * page views.
 697          */
 698         protected function showCssOrJsPage() { #FIXME: deprecate, keep for BC
 699                 global $wgOut;
 700
 701                 $dir = $this->getContext()->getLanguage()->getDir();
 702                 $lang = $this->getContext()->getLanguage()->getCode();
 703
 704                 $wgOut->wrapWikiMsg( "<div id='mw-clearyourcache' lang='$lang' dir='$dir' class='mw-content-$dir'>\n$1\n</div>",
 705                         'clearyourcache' ); #FIXME: get this from handler
 706
 707                 // Give hooks a chance to customise the output
 708                 if ( wfRunHooks( 'ShowRawCssJs', array( $this->mContent, $this->getTitle(), $wgOut ) ) ) {
 709             #FIXME: use content object instead
 710                         // Wrap the whole lot in a <pre> and don't parse
 711                         $m = array();
 712                         preg_match( '!\.(css|js)$!u', $this->getTitle()->getText(), $m );
 713                         $wgOut->addHTML( "<pre class=\"mw-code mw-{$m[1]}\" dir=\"ltr\">\n" );
 714                         $wgOut->addHTML( htmlspecialchars( $this->mContent ) );
 715                         $wgOut->addHTML( "\n</pre>\n" );
 716                 }
 717         }
 718
 719         /**
 720          * Get the robot policy to be used for the current view
 721          * @param $action String the action= GET parameter
 722          * @param $pOutput ParserOutput
 723          * @return Array the policy that should be set
 724          * TODO: actions other than 'view'
 725          */
 726         public function getRobotPolicy( $action, $pOutput ) {
 727                 global $wgOut, $wgArticleRobotPolicies, $wgNamespaceRobotPolicies;
 728                 global $wgDefaultRobotPolicy, $wgRequest;
 729
 730                 $ns = $this->getTitle()->getNamespace();
 731
 732                 if ( $ns == NS_USER || $ns == NS_USER_TALK ) {
 733                         # Don't index user and user talk pages for blocked users (bug 11443)
 734                         if ( !$this->getTitle()->isSubpage() ) {
 735                                 if ( Block::newFromTarget( null, $this->getTitle()->getText() ) instanceof Block ) {
 736                                         return array(
 737                                                 'index'  => 'noindex',
 738                                                 'follow' => 'nofollow'
 739                                         );
 740                                 }
 741                         }
 742                 }
 743
 744                 if ( $this->mPage->getID() === 0 || $this->getOldID() ) {
 745                         # Non-articles (special pages etc), and old revisions
 746                         return array(
 747                                 'index'  => 'noindex',
 748                                 'follow' => 'nofollow'
 749                         );
 750                 } elseif ( $wgOut->isPrintable() ) {
 751                         # Discourage indexing of printable versions, but encourage following
 752                         return array(
 753                                 'index'  => 'noindex',
 754                                 'follow' => 'follow'
 755                         );
 756                 } elseif ( $wgRequest->getInt( 'curid' ) ) {
 757                         # For ?curid=x urls, disallow indexing
 758                         return array(
 759                                 'index'  => 'noindex',
 760                                 'follow' => 'follow'
 761                         );
 762                 }
 763
 764                 # Otherwise, construct the policy based on the various config variables.
 765                 $policy = self::formatRobotPolicy( $wgDefaultRobotPolicy );
 766
 767                 if ( isset( $wgNamespaceRobotPolicies[$ns] ) ) {
 768                         # Honour customised robot policies for this namespace
 769                         $policy = array_merge(
 770                                 $policy,
 771                                 self::formatRobotPolicy( $wgNamespaceRobotPolicies[$ns] )
 772                         );
 773                 }
 774                 if ( $this->getTitle()->canUseNoindex() && is_object( $pOutput ) && $pOutput->getIndexPolicy() ) {
 775                         # __INDEX__ and __NOINDEX__ magic words, if allowed. Incorporates
 776                         # a final sanity check that we have really got the parser output.
 777                         $policy = array_merge(
 778                                 $policy,
 779                                 array( 'index' => $pOutput->getIndexPolicy() )
 780                         );
 781                 }
 782
 783                 if ( isset( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] ) ) {
 784                         # (bug 14900) site config can override user-defined __INDEX__ or __NOINDEX__
 785                         $policy = array_merge(
 786                                 $policy,
 787                                 self::formatRobotPolicy( $wgArticleRobotPolicies[$this->getTitle()->getPrefixedText()] )
 788                         );
 789                 }
 790
 791                 return $policy;
 792         }
 793
 794         /**
 795          * Converts a String robot policy into an associative array, to allow
 796          * merging of several policies using array_merge().
 797          * @param $policy Mixed, returns empty array on null/false/'', transparent
 798          *            to already-converted arrays, converts String.
 799          * @return Array: 'index' => <indexpolicy>, 'follow' => <followpolicy>
 800          */
 801         public static function formatRobotPolicy( $policy ) {
 802                 if ( is_array( $policy ) ) {
 803                         return $policy;
 804                 } elseif ( !$policy ) {
 805                         return array();
 806                 }
 807
 808                 $policy = explode( ',', $policy );
 809                 $policy = array_map( 'trim', $policy );
 810
 811                 $arr = array();
 812                 foreach ( $policy as $var ) {
 813                         if ( in_array( $var, array( 'index', 'noindex' ) ) ) {
 814                                 $arr['index'] = $var;
 815                         } elseif ( in_array( $var, array( 'follow', 'nofollow' ) ) ) {
 816                                 $arr['follow'] = $var;
 817                         }
 818                 }
 819
 820                 return $arr;
 821         }
 822
 823         /**
 824          * If this request is a redirect view, send "redirected from" subtitle to
 825          * $wgOut. Returns true if the header was needed, false if this is not a
 826          * redirect view. Handles both local and remote redirects.
 827          *
 828          * @return boolean
 829          */
 830         public function showRedirectedFromHeader() {
 831                 global $wgOut, $wgRequest, $wgRedirectSources;
 832
 833                 $rdfrom = $wgRequest->getVal( 'rdfrom' );
 834
 835                 if ( isset( $this->mRedirectedFrom ) ) {
 836                         // This is an internally redirected page view.
 837                         // We'll need a backlink to the source page for navigation.
 838                         if ( wfRunHooks( 'ArticleViewRedirect', array( &$this ) ) ) {
 839                                 $redir = Linker::linkKnown(
 840                                         $this->mRedirectedFrom,
 841                                         null,
 842                                         array(),
 843                                         array( 'redirect' => 'no' )
 844                                 );
 845
 846                                 $wgOut->addSubtitle( wfMessage( 'redirectedfrom' )->rawParams( $redir ) );
 847
 848                                 // Set the fragment if one was specified in the redirect
 849                                 if ( strval( $this->getTitle()->getFragment() ) != '' ) {
 850                                         $fragment = Xml::escapeJsString( $this->getTitle()->getFragmentForURL() );
 851                                         $wgOut->addInlineScript( "redirectToFragment(\"$fragment\");" );
 852                                 }
 853
 854                                 // Add a <link rel="canonical"> tag
 855                                 $wgOut->addLink( array( 'rel' => 'canonical',
 856                                         'href' => $this->getTitle()->getLocalURL() )
 857                                 );
 858
 859                                 // Tell $wgOut the user arrived at this article through a redirect
 860                                 $wgOut->setRedirectedFrom( $this->mRedirectedFrom );
 861
 862                                 return true;
 863                         }
 864                 } elseif ( $rdfrom ) {
 865                         // This is an externally redirected view, from some other wiki.
 866                         // If it was reported from a trusted site, supply a backlink.
 867                         if ( $wgRedirectSources && preg_match( $wgRedirectSources, $rdfrom ) ) {
 868                                 $redir = Linker::makeExternalLink( $rdfrom, $rdfrom );
 869                                 $wgOut->addSubtitle( wfMessage( 'redirectedfrom' )->rawParams( $redir ) );
 870
 871                                 return true;
 872                         }
 873                 }
 874
 875                 return false;
 876         }
 877
 878         /**
 879          * Show a header specific to the namespace currently being viewed, like
 880          * [[MediaWiki:Talkpagetext]]. For Article::view().
 881          */
 882         public function showNamespaceHeader() {
 883                 global $wgOut;
 884
 885                 if ( $this->getTitle()->isTalkPage() ) {
 886                         if ( !wfMessage( 'talkpageheader' )->isDisabled() ) {
 887                                 $wgOut->wrapWikiMsg( "<div class=\"mw-talkpageheader\">\n$1\n</div>", array( 'talkpageheader' ) );
 888                         }
 889                 }
 890         }
 891
 892         /**
 893          * Show the footer section of an ordinary page view
 894          */
 895         public function showViewFooter() {
 896                 global $wgOut;
 897
 898                 # check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
 899                 if ( $this->getTitle()->getNamespace() == NS_USER_TALK && IP::isValid( $this->getTitle()->getText() ) ) {
 900                         $wgOut->addWikiMsg( 'anontalkpagetext' );
 901                 }
 902
 903                 # If we have been passed an &rcid= parameter, we want to give the user a
 904                 # chance to mark this new article as patrolled.
 905                 $this->showPatrolFooter();
 906
 907                 wfRunHooks( 'ArticleViewFooter', array( $this ) );
 908
 909         }
 910
 911         /**
 912          * If patrol is possible, output a patrol UI box. This is called from the
 913          * footer section of ordinary page views. If patrol is not possible or not
 914          * desired, does nothing.
 915          */
 916         public function showPatrolFooter() {
 917                 global $wgOut, $wgRequest, $wgUser;
 918
 919                 $rcid = $wgRequest->getVal( 'rcid' );
 920
 921                 if ( !$rcid || !$this->getTitle()->quickUserCan( 'patrol' ) ) {
 922                         return;
 923                 }
 924
 925                 $token = $wgUser->getEditToken( $rcid );
 926                 $wgOut->preventClickjacking();
 927
 928                 $wgOut->addHTML(
 929                         "<div class='patrollink'>" .
 930                                 wfMsgHtml(
 931                                         'markaspatrolledlink',
 932                                         Linker::link(
 933                                                 $this->getTitle(),
 934                                                 wfMsgHtml( 'markaspatrolledtext' ),
 935                                                 array(),
 936                                                 array(
 937                                                         'action' => 'markpatrolled',
 938                                                         'rcid' => $rcid,
 939                                                         'token' => $token,
 940                                                 ),
 941                                                 array( 'known', 'noclasses' )
 942                                         )
 943                                 ) .
 944                         '</div>'
 945                 );
 946         }
 947
 948         /**
 949          * Show the error text for a missing article. For articles in the MediaWiki
 950          * namespace, show the default message text. To be called from Article::view().
 951          */
 952         public function showMissingArticle() {
 953                 global $wgOut, $wgRequest, $wgUser, $wgSend404Code;
 954
 955                 # Show info in user (talk) namespace. Does the user exist? Is he blocked?
 956                 if ( $this->getTitle()->getNamespace() == NS_USER || $this->getTitle()->getNamespace() == NS_USER_TALK ) {
 957                         $parts = explode( '/', $this->getTitle()->getText() );
 958                         $rootPart = $parts[0];
 959                         $user = User::newFromName( $rootPart, false /* allow IP users*/ );
 960                         $ip = User::isIP( $rootPart );
 961
 962                         if ( !($user && $user->isLoggedIn()) && !$ip ) { # User does not exist
 963                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n\$1\n</div>",
 964                                         array( 'userpage-userdoesnotexist-view', wfEscapeWikiText( $rootPart ) ) );
 965                         } elseif ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
 966                                 LogEventsList::showLogExtract(
 967                                         $wgOut,
 968                                         'block',
 969                                         $user->getUserPage()->getPrefixedText(),
 970                                         '',
 971                                         array(
 972                                                 'lim' => 1,
 973                                                 'showIfEmpty' => false,
 974                                                 'msgKey' => array(
 975                                                         'blocked-notice-logextract',
 976                                                         $user->getName() # Support GENDER in notice
 977                                                 )
 978                                         )
 979                                 );
 980                         }
 981                 }
 982
 983                 wfRunHooks( 'ShowMissingArticle', array( $this ) );
 984
 985                 # Show delete and move logs
 986                 LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->getTitle()->getPrefixedText(), '',
 987                         array(  'lim' => 10,
 988                                 'conds' => array( "log_action != 'revision'" ),
 989                                 'showIfEmpty' => false,
 990                                 'msgKey' => array( 'moveddeleted-notice' ) )
 991                 );
 992
 993                 # Show error message
 994                 $oldid = $this->getOldID();
 995                 if ( $oldid ) {
 996                         $text = wfMsgNoTrans( 'missing-article',
 997                                 $this->getTitle()->getPrefixedText(),
 998                                 wfMsgNoTrans( 'missingarticle-rev', $oldid ) );
 999                 } elseif ( $this->getTitle()->getNamespace() === NS_MEDIAWIKI ) {
1000                         // Use the default message text
1001                         $text = $this->getTitle()->getDefaultMessageText();
1002                 } else {
1003                         $createErrors = $this->getTitle()->getUserPermissionsErrors( 'create', $wgUser );
1004                         $editErrors = $this->getTitle()->getUserPermissionsErrors( 'edit', $wgUser );
1005                         $errors = array_merge( $createErrors, $editErrors );
1006
1007                         if ( !count( $errors ) ) {
1008                                 $text = wfMsgNoTrans( 'noarticletext' );
1009                         } else {
1010                                 $text = wfMsgNoTrans( 'noarticletext-nopermission' );
1011                         }
1012                 }
1013                 $text = "<div class='noarticletext'>\n$text\n</div>";
1014
1015                 if ( !$this->mPage->hasViewableContent() && $wgSend404Code ) {
1016                         // If there's no backing content, send a 404 Not Found
1017                         // for better machine handling of broken links.
1018                         $wgRequest->response()->header( "HTTP/1.1 404 Not Found" );
1019                 }
1020
1021                 $wgOut->addWikiText( $text );
1022         }
1023
1024         /**
1025          * If the revision requested for view is deleted, check permissions.
1026          * Send either an error message or a warning header to $wgOut.
1027          *
1028          * @return boolean true if the view is allowed, false if not.
1029          */
1030         public function showDeletedRevisionHeader() {
1031                 global $wgOut, $wgRequest;
1032
1033                 if ( !$this->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1034                         // Not deleted
1035                         return true;
1036                 }
1037
1038                 // If the user is not allowed to see it...
1039                 if ( !$this->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1040                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1041                                 'rev-deleted-text-permission' );
1042
1043                         return false;
1044                 // If the user needs to confirm that they want to see it...
1045                 } elseif ( $wgRequest->getInt( 'unhide' ) != 1 ) {
1046                         # Give explanation and add a link to view the revision...
1047                         $oldid = intval( $this->getOldID() );
1048                         $link = $this->getTitle()->getFullUrl( "oldid={$oldid}&unhide=1" );
1049                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1050                                 'rev-suppressed-text-unhide' : 'rev-deleted-text-unhide';
1051                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n",
1052                                 array( $msg, $link ) );
1053
1054                         return false;
1055                 // We are allowed to see...
1056                 } else {
1057                         $msg = $this->mRevision->isDeleted( Revision::DELETED_RESTRICTED ) ?
1058                                 'rev-suppressed-text-view' : 'rev-deleted-text-view';
1059                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", $msg );
1060
1061                         return true;
1062                 }
1063         }
1064
1065         /**
1066          * Generate the navigation links when browsing through an article revisions
1067          * It shows the information as:
1068          *   Revision as of \<date\>; view current revision
1069          *   \<- Previous version | Next Version -\>
1070          *
1071          * @param $oldid String: revision ID of this article revision
1072          */
1073         public function setOldSubtitle( $oldid = 0 ) {
1074                 global $wgLang, $wgOut, $wgUser, $wgRequest;
1075
1076                 if ( !wfRunHooks( 'DisplayOldSubtitle', array( &$this, &$oldid ) ) ) {
1077                         return;
1078                 }
1079
1080                 $unhide = $wgRequest->getInt( 'unhide' ) == 1;
1081
1082                 # Cascade unhide param in links for easy deletion browsing
1083                 $extraParams = array();
1084                 if ( $wgRequest->getVal( 'unhide' ) ) {
1085                         $extraParams['unhide'] = 1;
1086                 }
1087
1088                 $revision = Revision::newFromId( $oldid );
1089                 $timestamp = $revision->getTimestamp();
1090
1091                 $current = ( $oldid == $this->mPage->getLatest() );
1092                 $td = $wgLang->timeanddate( $timestamp, true );
1093                 $tddate = $wgLang->date( $timestamp, true );
1094                 $tdtime = $wgLang->time( $timestamp, true );
1095
1096                 # Show user links if allowed to see them. If hidden, then show them only if requested...
1097                 $userlinks = Linker::revUserTools( $revision, !$unhide );
1098
1099                 $infomsg = $current && !wfMessage( 'revision-info-current' )->isDisabled()
1100                         ? 'revision-info-current'
1101                         : 'revision-info';
1102
1103                 $wgOut->addSubtitle( "<div id=\"mw-{$infomsg}\">" . wfMessage( $infomsg,
1104                         $td )->rawParams( $userlinks )->params( $revision->getID(), $tddate,
1105                         $tdtime, $revision->getUser() )->parse() . "</div>" );
1106
1107                 $lnk = $current
1108                         ? wfMsgHtml( 'currentrevisionlink' )
1109                         : Linker::link(
1110                                 $this->getTitle(),
1111                                 wfMsgHtml( 'currentrevisionlink' ),
1112                                 array(),
1113                                 $extraParams,
1114                                 array( 'known', 'noclasses' )
1115                         );
1116                 $curdiff = $current
1117                         ? wfMsgHtml( 'diff' )
1118                         : Linker::link(
1119                                 $this->getTitle(),
1120                                 wfMsgHtml( 'diff' ),
1121                                 array(),
1122                                 array(
1123                                         'diff' => 'cur',
1124                                         'oldid' => $oldid
1125                                 ) + $extraParams,
1126                                 array( 'known', 'noclasses' )
1127                         );
1128                 $prev = $this->getTitle()->getPreviousRevisionID( $oldid ) ;
1129                 $prevlink = $prev
1130                         ? Linker::link(
1131                                 $this->getTitle(),
1132                                 wfMsgHtml( 'previousrevision' ),
1133                                 array(),
1134                                 array(
1135                                         'direction' => 'prev',
1136                                         'oldid' => $oldid
1137                                 ) + $extraParams,
1138                                 array( 'known', 'noclasses' )
1139                         )
1140                         : wfMsgHtml( 'previousrevision' );
1141                 $prevdiff = $prev
1142                         ? Linker::link(
1143                                 $this->getTitle(),
1144                                 wfMsgHtml( 'diff' ),
1145                                 array(),
1146                                 array(
1147                                         'diff' => 'prev',
1148                                         'oldid' => $oldid
1149                                 ) + $extraParams,
1150                                 array( 'known', 'noclasses' )
1151                         )
1152                         : wfMsgHtml( 'diff' );
1153                 $nextlink = $current
1154                         ? wfMsgHtml( 'nextrevision' )
1155                         : Linker::link(
1156                                 $this->getTitle(),
1157                                 wfMsgHtml( 'nextrevision' ),
1158                                 array(),
1159                                 array(
1160                                         'direction' => 'next',
1161                                         'oldid' => $oldid
1162                                 ) + $extraParams,
1163                                 array( 'known', 'noclasses' )
1164                         );
1165                 $nextdiff = $current
1166                         ? wfMsgHtml( 'diff' )
1167                         : Linker::link(
1168                                 $this->getTitle(),
1169                                 wfMsgHtml( 'diff' ),
1170                                 array(),
1171                                 array(
1172                                         'diff' => 'next',
1173                                         'oldid' => $oldid
1174                                 ) + $extraParams,
1175                                 array( 'known', 'noclasses' )
1176                         );
1177
1178                 $cdel = Linker::getRevDeleteLink( $wgUser, $revision, $this->getTitle() );
1179                 if ( $cdel !== '' ) {
1180                         $cdel .= ' ';
1181                 }
1182
1183                 $wgOut->addSubtitle( "<div id=\"mw-revision-nav\">" . $cdel .
1184                         wfMsgExt( 'revision-nav', array( 'escapenoentities', 'parsemag', 'replaceafter' ),
1185                         $prevdiff, $prevlink, $lnk, $curdiff, $nextlink, $nextdiff ) . "</div>" );
1186         }
1187
1188         /**
1189          * View redirect
1190          *
1191          * @param $target Title|Array of destination(s) to redirect
1192          * @param $appendSubtitle Boolean [optional]
1193          * @param $forceKnown Boolean: should the image be shown as a bluelink regardless of existence?
1194          * @return string containing HMTL with redirect link
1195          */
1196         public function viewRedirect( $target, $appendSubtitle = true, $forceKnown = false ) {
1197                 global $wgOut, $wgStylePath;
1198
1199                 if ( !is_array( $target ) ) {
1200                         $target = array( $target );
1201                 }
1202
1203                 $lang = $this->getTitle()->getPageLanguage();
1204                 $imageDir = $lang->getDir();
1205
1206                 if ( $appendSubtitle ) {
1207                         $wgOut->appendSubtitle( wfMsgHtml( 'redirectpagesub' ) );
1208                 }
1209
1210                 // the loop prepends the arrow image before the link, so the first case needs to be outside
1211
1212                 /**
1213                  * @var $title Title
1214                  */
1215                 $title = array_shift( $target );
1216
1217                 if ( $forceKnown ) {
1218                         $link = Linker::linkKnown( $title, htmlspecialchars( $title->getFullText() ) );
1219                 } else {
1220                         $link = Linker::link( $title, htmlspecialchars( $title->getFullText() ) );
1221                 }
1222
1223                 $nextRedirect = $wgStylePath . '/common/images/nextredirect' . $imageDir . '.png';
1224                 $alt = $lang->isRTL() ? '←' : '→';
1225                 // Automatically append redirect=no to each link, since most of them are redirect pages themselves.
1226                 foreach ( $target as $rt ) {
1227                         $link .= Html::element( 'img', array( 'src' => $nextRedirect, 'alt' => $alt ) );
1228                         if ( $forceKnown ) {
1229                                 $link .= Linker::linkKnown( $rt, htmlspecialchars( $rt->getFullText(), array(), array( 'redirect' => 'no' ) ) );
1230                         } else {
1231                                 $link .= Linker::link( $rt, htmlspecialchars( $rt->getFullText() ), array(), array( 'redirect' => 'no' ) );
1232                         }
1233                 }
1234
1235                 $imageUrl = $wgStylePath . '/common/images/redirect' . $imageDir . '.png';
1236                 return '<div class="redirectMsg">' .
1237                         Html::element( 'img', array( 'src' => $imageUrl, 'alt' => '#REDIRECT' ) ) .
1238                         '<span class="redirectText">' . $link . '</span></div>';
1239         }
1240
1241         /**
1242          * Handle action=render
1243          */
1244         public function render() {
1245                 global $wgOut;
1246
1247                 $wgOut->setArticleBodyOnly( true );
1248                 $this->view();
1249         }
1250
1251         /**
1252          * action=protect handler
1253          */
1254         public function protect() {
1255                 $form = new ProtectionForm( $this );
1256                 $form->execute();
1257         }
1258
1259         /**
1260          * action=unprotect handler (alias)
1261          */
1262         public function unprotect() {
1263                 $this->protect();
1264         }
1265
1266         /**
1267          * UI entry point for page deletion
1268          */
1269         public function delete() {
1270                 global $wgOut, $wgRequest, $wgLang;
1271
1272                 # This code desperately needs to be totally rewritten
1273
1274                 $title = $this->getTitle();
1275                 $user = $this->getContext()->getUser();
1276
1277                 # Check permissions
1278                 $permission_errors = $title->getUserPermissionsErrors( 'delete', $user );
1279                 if ( count( $permission_errors ) ) {
1280                         throw new PermissionsError( 'delete', $permission_errors );
1281                 }
1282
1283                 # Read-only check...
1284                 if ( wfReadOnly() ) {
1285                         throw new ReadOnlyError;
1286                 }
1287
1288                 # Better double-check that it hasn't been deleted yet!
1289                 $dbw = wfGetDB( DB_MASTER );
1290                 $conds = $title->pageCond();
1291                 $latest = $dbw->selectField( 'page', 'page_latest', $conds, __METHOD__ );
1292                 if ( $latest === false ) {
1293                         $wgOut->setPageTitle( wfMessage( 'cannotdelete-title', $title->getPrefixedText() ) );
1294                         $wgOut->wrapWikiMsg( "<div class=\"error mw-error-cannotdelete\">\n$1\n</div>",
1295                                         array( 'cannotdelete', wfEscapeWikiText( $title->getPrefixedText() ) )
1296                                 );
1297                         $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1298                         LogEventsList::showLogExtract(
1299                                 $wgOut,
1300                                 'delete',
1301                                 $title->getPrefixedText()
1302                         );
1303
1304                         return;
1305                 }
1306
1307                 $deleteReasonList = $wgRequest->getText( 'wpDeleteReasonList', 'other' );
1308                 $deleteReason = $wgRequest->getText( 'wpReason' );
1309
1310                 if ( $deleteReasonList == 'other' ) {
1311                         $reason = $deleteReason;
1312                 } elseif ( $deleteReason != '' ) {
1313                         // Entry from drop down menu + additional comment
1314                         $reason = $deleteReasonList . wfMsgForContent( 'colon-separator' ) . $deleteReason;
1315                 } else {
1316                         $reason = $deleteReasonList;
1317                 }
1318
1319                 if ( $wgRequest->wasPosted() && $user->matchEditToken( $wgRequest->getVal( 'wpEditToken' ),
1320                         array( 'delete', $this->getTitle()->getPrefixedText() ) ) )
1321                 {
1322                         # Flag to hide all contents of the archived revisions
1323                         $suppress = $wgRequest->getVal( 'wpSuppress' ) && $user->isAllowed( 'suppressrevision' );
1324
1325                         $this->doDelete( $reason, $suppress );
1326
1327                         if ( $wgRequest->getCheck( 'wpWatch' ) && $user->isLoggedIn() ) {
1328                                 $this->doWatch();
1329                         } elseif ( $title->userIsWatching() ) {
1330                                 $this->doUnwatch();
1331                         }
1332
1333                         return;
1334                 }
1335
1336                 // Generate deletion reason
1337                 $hasHistory = false;
1338                 if ( !$reason ) {
1339                         $reason = $this->generateReason( $hasHistory );
1340                 }
1341
1342                 // If the page has a history, insert a warning
1343                 if ( $hasHistory ) {
1344                         $revisions = $this->mTitle->estimateRevisionCount();
1345                         // @todo FIXME: i18n issue/patchwork message
1346                         $wgOut->addHTML( '<strong class="mw-delete-warning-revisions">' .
1347                                 wfMsgExt( 'historywarning', array( 'parseinline' ), $wgLang->formatNum( $revisions ) ) .
1348                                 wfMsgHtml( 'word-separator' ) . Linker::link( $title,
1349                                         wfMsgHtml( 'history' ),
1350                                         array( 'rel' => 'archives' ),
1351                                         array( 'action' => 'history' ) ) .
1352                                 '</strong>'
1353                         );
1354
1355                         if ( $this->mTitle->isBigDeletion() ) {
1356                                 global $wgDeleteRevisionsLimit;
1357                                 $wgOut->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n",
1358                                         array( 'delete-warning-toobig', $wgLang->formatNum( $wgDeleteRevisionsLimit ) ) );
1359                         }
1360                 }
1361
1362                 return $this->confirmDelete( $reason );
1363         }
1364
1365         /**
1366          * Output deletion confirmation dialog
1367          * @todo FIXME: Move to another file?
1368          * @param $reason String: prefilled reason
1369          */
1370         public function confirmDelete( $reason ) {
1371                 global $wgOut;
1372
1373                 wfDebug( "Article::confirmDelete\n" );
1374
1375                 $wgOut->setPageTitle( wfMessage( 'delete-confirm', $this->getTitle()->getPrefixedText() ) );
1376                 $wgOut->addBacklinkSubtitle( $this->getTitle() );
1377                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1378                 $wgOut->addWikiMsg( 'confirmdeletetext' );
1379
1380                 wfRunHooks( 'ArticleConfirmDelete', array( $this, $wgOut, &$reason ) );
1381
1382                 $user = $this->getContext()->getUser();
1383
1384                 if ( $user->isAllowed( 'suppressrevision' ) ) {
1385                         $suppress = "<tr id=\"wpDeleteSuppressRow\">
1386                                         <td></td>
1387                                         <td class='mw-input'><strong>" .
1388                                                 Xml::checkLabel( wfMsg( 'revdelete-suppress' ),
1389                                                         'wpSuppress', 'wpSuppress', false, array( 'tabindex' => '4' ) ) .
1390                                         "</strong></td>
1391                                 </tr>";
1392                 } else {
1393                         $suppress = '';
1394                 }
1395                 $checkWatch = $user->getBoolOption( 'watchdeletion' ) || $this->getTitle()->userIsWatching();
1396
1397                 $form = Xml::openElement( 'form', array( 'method' => 'post',
1398                         'action' => $this->getTitle()->getLocalURL( 'action=delete' ), 'id' => 'deleteconfirm' ) ) .
1399                         Xml::openElement( 'fieldset', array( 'id' => 'mw-delete-table' ) ) .
1400                         Xml::tags( 'legend', null, wfMsgExt( 'delete-legend', array( 'parsemag', 'escapenoentities' ) ) ) .
1401                         Xml::openElement( 'table', array( 'id' => 'mw-deleteconfirm-table' ) ) .
1402                         "<tr id=\"wpDeleteReasonListRow\">
1403                                 <td class='mw-label'>" .
1404                                         Xml::label( wfMsg( 'deletecomment' ), 'wpDeleteReasonList' ) .
1405                                 "</td>
1406                                 <td class='mw-input'>" .
1407                                         Xml::listDropDown( 'wpDeleteReasonList',
1408                                                 wfMsgForContent( 'deletereason-dropdown' ),
1409                                                 wfMsgForContent( 'deletereasonotherlist' ), '', 'wpReasonDropDown', 1 ) .
1410                                 "</td>
1411                         </tr>
1412                         <tr id=\"wpDeleteReasonRow\">
1413                                 <td class='mw-label'>" .
1414                                         Xml::label( wfMsg( 'deleteotherreason' ), 'wpReason' ) .
1415                                 "</td>
1416                                 <td class='mw-input'>" .
1417                                 Html::input( 'wpReason', $reason, 'text', array(
1418                                         'size' => '60',
1419                                         'maxlength' => '255',
1420                                         'tabindex' => '2',
1421                                         'id' => 'wpReason',
1422                                         'autofocus'
1423                                 ) ) .
1424                                 "</td>
1425                         </tr>";
1426
1427                 # Disallow watching if user is not logged in
1428                 if ( $user->isLoggedIn() ) {
1429                         $form .= "
1430                         <tr>
1431                                 <td></td>
1432                                 <td class='mw-input'>" .
1433                                         Xml::checkLabel( wfMsg( 'watchthis' ),
1434                                                 'wpWatch', 'wpWatch', $checkWatch, array( 'tabindex' => '3' ) ) .
1435                                 "</td>
1436                         </tr>";
1437                 }
1438
1439                 $form .= "
1440                         $suppress
1441                         <tr>
1442                                 <td></td>
1443                                 <td class='mw-submit'>" .
1444                                         Xml::submitButton( wfMsg( 'deletepage' ),
1445                                                 array( 'name' => 'wpConfirmB', 'id' => 'wpConfirmB', 'tabindex' => '5' ) ) .
1446                                 "</td>
1447                         </tr>" .
1448                         Xml::closeElement( 'table' ) .
1449                         Xml::closeElement( 'fieldset' ) .
1450                         Html::hidden( 'wpEditToken', $user->getEditToken( array( 'delete', $this->getTitle()->getPrefixedText() ) ) ) .
1451                         Xml::closeElement( 'form' );
1452
1453                         if ( $user->isAllowed( 'editinterface' ) ) {
1454                                 $title = Title::makeTitle( NS_MEDIAWIKI, 'Deletereason-dropdown' );
1455                                 $link = Linker::link(
1456                                         $title,
1457                                         wfMsgHtml( 'delete-edit-reasonlist' ),
1458                                         array(),
1459                                         array( 'action' => 'edit' )
1460                                 );
1461                                 $form .= '<p class="mw-delete-editreasons">' . $link . '</p>';
1462                         }
1463
1464                 $wgOut->addHTML( $form );
1465                 $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1466                 LogEventsList::showLogExtract( $wgOut, 'delete',
1467                         $this->getTitle()->getPrefixedText()
1468                 );
1469         }
1470
1471         /**
1472          * Perform a deletion and output success or failure messages
1473          * @param $reason
1474          * @param $suppress bool
1475          */
1476         public function doDelete( $reason, $suppress = false ) {
1477                 global $wgOut;
1478
1479                 $error = '';
1480                 if ( $this->mPage->doDeleteArticle( $reason, $suppress, 0, true, $error ) ) {
1481                         $deleted = $this->getTitle()->getPrefixedText();
1482
1483                         $wgOut->setPageTitle( wfMessage( 'actioncomplete' ) );
1484                         $wgOut->setRobotPolicy( 'noindex,nofollow' );
1485
1486                         $loglink = '[[Special:Log/delete|' . wfMsgNoTrans( 'deletionlog' ) . ']]';
1487
1488                         $wgOut->addWikiMsg( 'deletedtext', wfEscapeWikiText( $deleted ), $loglink );
1489                         $wgOut->returnToMain( false );
1490                 } else {
1491                         $wgOut->setPageTitle( wfMessage( 'cannotdelete-title', $this->getTitle()->getPrefixedText() ) );
1492                         if ( $error == '' ) {
1493                                 $wgOut->wrapWikiMsg( "<div class=\"error mw-error-cannotdelete\">\n$1\n</div>",
1494                                         array( 'cannotdelete', wfEscapeWikiText( $this->getTitle()->getPrefixedText() ) )
1495                                 );
1496                                 $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
1497
1498                                 LogEventsList::showLogExtract(
1499                                         $wgOut,
1500                                         'delete',
1501                                         $this->getTitle()->getPrefixedText()
1502                                 );
1503                         } else {
1504                                 $wgOut->addHTML( $error );
1505                         }
1506                 }
1507         }
1508
1509         /* Caching functions */
1510
1511         /**
1512          * checkLastModified returns true if it has taken care of all
1513          * output to the client that is necessary for this request.
1514          * (that is, it has sent a cached version of the page)
1515          *
1516          * @return boolean true if cached version send, false otherwise
1517          */
1518         protected function tryFileCache() {
1519                 static $called = false;
1520
1521                 if ( $called ) {
1522                         wfDebug( "Article::tryFileCache(): called twice!?\n" );
1523                         return false;
1524                 }
1525
1526                 $called = true;
1527                 if ( $this->isFileCacheable() ) {
1528                         $cache = HTMLFileCache::newFromTitle( $this->getTitle(), 'view' );
1529                         if ( $cache->isCacheGood( $this->mPage->getTouched() ) ) {
1530                                 wfDebug( "Article::tryFileCache(): about to load file\n" );
1531                                 $cache->loadFromFileCache( $this->getContext() );
1532                                 return true;
1533                         } else {
1534                                 wfDebug( "Article::tryFileCache(): starting buffer\n" );
1535                                 ob_start( array( &$cache, 'saveToFileCache' ) );
1536                         }
1537                 } else {
1538                         wfDebug( "Article::tryFileCache(): not cacheable\n" );
1539                 }
1540
1541                 return false;
1542         }
1543
1544         /**
1545          * Check if the page can be cached
1546          * @return bool
1547          */
1548         public function isFileCacheable() {
1549                 $cacheable = false;
1550
1551                 if ( HTMLFileCache::useFileCache( $this->getContext() ) ) {
1552                         $cacheable = $this->mPage->getID()
1553                                 && !$this->mRedirectedFrom && !$this->getTitle()->isRedirect();
1554                         // Extension may have reason to disable file caching on some pages.
1555                         if ( $cacheable ) {
1556                                 $cacheable = wfRunHooks( 'IsFileCacheable', array( &$this ) );
1557                         }
1558                 }
1559
1560                 return $cacheable;
1561         }
1562
1563         /**#@-*/
1564
1565         /**
1566          * Lightweight method to get the parser output for a page, checking the parser cache
1567          * and so on. Doesn't consider most of the stuff that WikiPage::view is forced to
1568          * consider, so it's not appropriate to use there.
1569          *
1570          * @since 1.16 (r52326) for LiquidThreads
1571          *
1572          * @param $oldid mixed integer Revision ID or null
1573          * @param $user User The relevant user
1574          * @return ParserOutput or false if the given revsion ID is not found
1575          */
1576         public function getParserOutput( $oldid = null, User $user = null ) {
1577                 global $wgUser;
1578
1579                 $user = is_null( $user ) ? $wgUser : $user;
1580                 $parserOptions = $this->mPage->makeParserOptions( $user );
1581
1582                 return $this->mPage->getParserOutput( $parserOptions, $oldid );
1583         }
1584
1585         /**
1586          * Get parser options suitable for rendering the primary article wikitext
1587          * @return ParserOptions|false
1588          */
1589         public function getParserOptions() {
1590                 global $wgUser;
1591                 if ( !$this->mParserOptions ) {
1592                         $this->mParserOptions = $this->mPage->makeParserOptions( $wgUser );
1593                 }
1594                 // Clone to allow modifications of the return value without affecting cache
1595                 return clone $this->mParserOptions;
1596         }
1597
1598         /**
1599          * Sets the context this Article is executed in
1600          *
1601          * @param $context IContextSource
1602          * @since 1.18
1603          */
1604         public function setContext( $context ) {
1605                 $this->mContext = $context;
1606         }
1607
1608         /**
1609          * Gets the context this Article is executed in
1610          *
1611          * @return IContextSource
1612          * @since 1.18
1613          */
1614         public function getContext() {
1615                 if ( $this->mContext instanceof IContextSource ) {
1616                         return $this->mContext;
1617                 } else {
1618                         wfDebug( __METHOD__ . " called and \$mContext is null. Return RequestContext::getMain(); for sanity\n" );
1619                         return RequestContext::getMain();
1620                 }
1621         }
1622
1623         /**
1624          * Info about this page
1625          * @deprecated since 1.19
1626          */
1627         public function info() {
1628                 wfDeprecated( __METHOD__, '1.19' );
1629                 Action::factory( 'info', $this )->show();
1630         }
1631
1632         /**
1633          * Mark this particular edit/page as patrolled
1634          * @deprecated since 1.18
1635          */
1636         public function markpatrolled() {
1637                 wfDeprecated( __METHOD__, '1.18' );
1638                 Action::factory( 'markpatrolled', $this )->show();
1639         }
1640
1641         /**
1642          * Handle action=purge
1643          * @deprecated since 1.19
1644          */
1645         public function purge() {
1646                 return Action::factory( 'purge', $this )->show();
1647         }
1648
1649         /**
1650          * Handle action=revert
1651          * @deprecated since 1.19
1652          */
1653         public function revert() {
1654                 wfDeprecated( __METHOD__, '1.19' );
1655                 Action::factory( 'revert', $this )->show();
1656         }
1657
1658         /**
1659          * Handle action=rollback
1660          * @deprecated since 1.19
1661          */
1662         public function rollback() {
1663                 wfDeprecated( __METHOD__, '1.19' );
1664                 Action::factory( 'rollback', $this )->show();
1665         }
1666
1667         /**
1668          * User-interface handler for the "watch" action.
1669          * Requires Request to pass a token as of 1.18.
1670          * @deprecated since 1.18
1671          */
1672         public function watch() {
1673                 wfDeprecated( __METHOD__, '1.18' );
1674                 Action::factory( 'watch', $this )->show();
1675         }
1676
1677         /**
1678          * Add this page to $wgUser's watchlist
1679          *
1680          * This is safe to be called multiple times
1681          *
1682          * @return bool true on successful watch operation
1683          * @deprecated since 1.18
1684          */
1685         public function doWatch() {
1686                 global $wgUser;
1687                 wfDeprecated( __METHOD__, '1.18' );
1688                 return WatchAction::doWatch( $this->getTitle(), $wgUser );
1689         }
1690
1691         /**
1692          * User interface handler for the "unwatch" action.
1693          * Requires Request to pass a token as of 1.18.
1694          * @deprecated since 1.18
1695          */
1696         public function unwatch() {
1697                 wfDeprecated( __METHOD__, '1.18' );
1698                 Action::factory( 'unwatch', $this )->show();
1699         }
1700
1701         /**
1702          * Stop watching a page
1703          * @return bool true on successful unwatch
1704          * @deprecated since 1.18
1705          */
1706         public function doUnwatch() {
1707                 global $wgUser;
1708                 wfDeprecated( __METHOD__, '1.18' );
1709                 return WatchAction::doUnwatch( $this->getTitle(), $wgUser );
1710         }
1711
1712         /**
1713          * Output a redirect back to the article.
1714          * This is typically used after an edit.
1715          *
1716          * @deprecated in 1.18; call $wgOut->redirect() directly
1717          * @param $noRedir Boolean: add redirect=no
1718          * @param $sectionAnchor String: section to redirect to, including "#"
1719          * @param $extraQuery String: extra query params
1720          */
1721         public function doRedirect( $noRedir = false, $sectionAnchor = '', $extraQuery = '' ) {
1722                 wfDeprecated( __METHOD__, '1.18' );
1723                 global $wgOut;
1724
1725                 if ( $noRedir ) {
1726                         $query = 'redirect=no';
1727                         if ( $extraQuery )
1728                                 $query .= "&$extraQuery";
1729                 } else {
1730                         $query = $extraQuery;
1731                 }
1732
1733                 $wgOut->redirect( $this->getTitle()->getFullURL( $query ) . $sectionAnchor );
1734         }
1735
1736         /**
1737          * Use PHP's magic __get handler to handle accessing of
1738          * raw WikiPage fields for backwards compatibility.
1739          *
1740          * @param $fname String Field name
1741          */
1742         public function __get( $fname ) {
1743                 if ( property_exists( $this->mPage, $fname ) ) {
1744                         #wfWarn( "Access to raw $fname field " . __CLASS__ );
1745                         return $this->mPage->$fname;
1746                 }
1747                 trigger_error( 'Inaccessible property via __get(): ' . $fname, E_USER_NOTICE );
1748         }
1749
1750         /**
1751          * Use PHP's magic __set handler to handle setting of
1752          * raw WikiPage fields for backwards compatibility.
1753          *
1754          * @param $fname String Field name
1755          * @param $fvalue mixed New value
1756          */
1757         public function __set( $fname, $fvalue ) {
1758                 if ( property_exists( $this->mPage, $fname ) ) {
1759                         #wfWarn( "Access to raw $fname field of " . __CLASS__ );
1760                         $this->mPage->$fname = $fvalue;
1761                 // Note: extensions may want to toss on new fields
1762                 } elseif ( !in_array( $fname, array( 'mContext', 'mPage' ) ) ) {
1763                         $this->mPage->$fname = $fvalue;
1764                 } else {
1765                         trigger_error( 'Inaccessible property via __set(): ' . $fname, E_USER_NOTICE );
1766                 }
1767         }
1768
1769         /**
1770          * Use PHP's magic __call handler to transform instance calls to
1771          * WikiPage functions for backwards compatibility.
1772          *
1773          * @param $fname String Name of called method
1774          * @param $args Array Arguments to the method
1775          */
1776         public function __call( $fname, $args ) {
1777                 if ( is_callable( array( $this->mPage, $fname ) ) ) {
1778                         #wfWarn( "Call to " . __CLASS__ . "::$fname; please use WikiPage instead" );
1779                         return call_user_func_array( array( $this->mPage, $fname ), $args );
1780                 }
1781                 trigger_error( 'Inaccessible function via __call(): ' . $fname, E_USER_ERROR );
1782         }
1783
1784         // ****** B/C functions to work-around PHP silliness with __call and references ****** //
1785
1786         /**
1787          * @param $limit array
1788          * @param $expiry array
1789          * @param $cascade bool
1790          * @param $reason string
1791          * @param $user User
1792          * @return Status
1793          */
1794         public function doUpdateRestrictions( array $limit, array $expiry, &$cascade, $reason, User $user ) {
1795                 return $this->mPage->doUpdateRestrictions( $limit, $expiry, $cascade, $reason, $user );
1796         }
1797
1798         /**
1799          * @param $limit array
1800          * @param $reason string
1801          * @param $cascade int
1802          * @param $expiry array
1803          * @return bool
1804          */
1805         public function updateRestrictions( $limit = array(), $reason = '', &$cascade = 0, $expiry = array() ) {
1806                 return $this->mPage->updateRestrictions( $limit, $reason, $cascade, $expiry );
1807         }
1808
1809         /**
1810          * @param $reason string
1811          * @param $suppress bool
1812          * @param $id int
1813          * @param $commit bool
1814          * @param $error string
1815          * @return bool
1816          */
1817         public function doDeleteArticle( $reason, $suppress = false, $id = 0, $commit = true, &$error = '' ) {
1818                 return $this->mPage->doDeleteArticle( $reason, $suppress, $id, $commit, $error );
1819         }
1820
1821         /**
1822          * @param $fromP
1823          * @param $summary
1824          * @param $token
1825          * @param $bot
1826          * @param $resultDetails
1827          * @param $user User
1828          * @return array
1829          */
1830         public function doRollback( $fromP, $summary, $token, $bot, &$resultDetails, User $user = null ) {
1831                 global $wgUser;
1832                 $user = is_null( $user ) ? $wgUser : $user;
1833                 return $this->mPage->doRollback( $fromP, $summary, $token, $bot, $resultDetails, $user );
1834         }
1835
1836         /**
1837          * @param $fromP
1838          * @param $summary
1839          * @param $bot
1840          * @param $resultDetails
1841          * @param $guser User
1842          * @return array
1843          */
1844         public function commitRollback( $fromP, $summary, $bot, &$resultDetails, User $guser = null ) {
1845                 global $wgUser;
1846                 $guser = is_null( $guser ) ? $wgUser : $guser;
1847                 return $this->mPage->commitRollback( $fromP, $summary, $bot, $resultDetails, $guser );
1848         }
1849
1850         /**
1851          * @param $hasHistory bool
1852          * @return mixed
1853          */
1854         public function generateReason( &$hasHistory ) {
1855                 return $this->mPage->getAutoDeleteReason( $hasHistory );
1856         }
1857
1858         // ****** B/C functions for static methods ( __callStatic is PHP>=5.3 ) ****** //
1859
1860         /**
1861          * @return array
1862          */
1863         public static function selectFields() {
1864                 return WikiPage::selectFields();
1865         }
1866
1867         /**
1868          * @param $title Title
1869          */
1870         public static function onArticleCreate( $title ) {
1871                 WikiPage::onArticleCreate( $title );
1872         }
1873
1874         /**
1875          * @param $title Title
1876          */
1877         public static function onArticleDelete( $title ) {
1878                 WikiPage::onArticleDelete( $title );
1879         }
1880
1881         /**
1882          * @param $title Title
1883          */
1884         public static function onArticleEdit( $title ) {
1885                 WikiPage::onArticleEdit( $title );
1886         }
1887
1888         /**
1889          * @param $oldtext
1890          * @param $newtext
1891          * @param $flags
1892          * @return string
1893          */
1894         public static function getAutosummary( $oldtext, $newtext, $flags ) {
1895                 return WikiPage::getAutosummary( $oldtext, $newtext, $flags );
1896         }
1897         // ******
1898 }